Xylem parenchyma cells deliver the H2O2 necessary for lignification in differentiating xylem vessels

By A. Barceló. Planta, 2005

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Membrane transport of hydrogen peroxide. (2006, background): “Non-lignifying xylem parenchyma cells could be identified as the place of H2O2 production, necessary to activate transcription and to polymerise the alcohols in the neighbouring secondary cell walls of dying/ dead xylem vessels [31], thus being a paracrine signal pathway.”
Reactive oxygen species homeostasis and signalling during drought and salinity stresses. (2010, background): “Accumulation of H2O2 in the apoplast is thought to be involved in acclimation responses of plants to drought and salt stresses, such as growth and cell wall strengthening (Hernandez et al. 2001; Rodriguez et al. 2004; Ros Barceló 2005; Jubany-Marí et al. 2009).”
The cell biology of lignification in higher plants. (2015, background): “, 2008), UV radiation (Rozema et al., 1997; Hilal et al., 2004), low temperature (Hausman et al.”